Issues with PDF after upgrading ELN to 18.1.x

Issues with PDF after upgrading ELN to 18.1.x

There can be various problems with PDF after upgrading E-Notebook to 18.1.x, including:

- inability to Drag & Drop into existing PDF sections
- seeing blank PDF during Sign & Close
- seeing errors like below during Sign & Close:

---------------------------
Initializing the sign version dialog failed
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Sorry, while creating an instance of Acrobat document,
Creating an instance of the COM component with CLSID
{72498821-3203-101B-B02E-04021C009402} from the IClassFactory failed due to the following error: 80010108 The object invoked has disconnected from its clients. (Exception from HRESULT: 0x80010108 (RPC_E_DISCONNECTED)).
(-2147417848).
---------------------------
OK
---------------------------


SOLUTION:
 
Please change standard PDF Viewer control to enhanced PDF Viewer control as described in our E-Notebook Administrator's Guide  -> E-Notebook Configuration -> Section Types -> Enhanced PDF Viewer Control for Upgraded Machines.